<!DOCTYPE html><html lang="zh-Hans"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"><meta name="description" content="简单快速实现UIProgressView进度条圆角"><meta name="keywords" content="新建,模板,小书匠"><meta name="author" content="kyren"><meta name="copyright" content="kyren"><title>简单快速实现UIProgressView进度条圆角 | Kyren's Blog</title><link rel="shortcut icon" href="/melody-favicon.ico"><link rel="stylesheet" href="/css/index.css?version=1.9.0"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/font-awesome@latest/css/font-awesome.min.css?version=1.9.0"><meta name="format-detection" content="telephone=no"><meta http-equiv="x-dns-prefetch-control" content="on"><link rel="dns-prefetch" href="https://cdn.jsdelivr.net"><link rel="dns-prefetch" href="https://hm.baidu.com"><script>var _hmt = _hmt || [];
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<ol>
<li>利用贝塞尔生成圆角图片</li>
<li>圆角不变形拉伸拉伸图片<code>resizableImageWithCapInsets</code><br><img src="http://7xr7vj.com1.z0.glb.clouddn.com/2016/03/24/FgyebQmfb7Xz26rka6M8clFEcAbd534.png"></li>
</ol>
<p>PS：UIProgressView在iOS7，iOS8.3上会出现设置trackimage和ProgressImage无效Bug，具体解决查阅：<a target="_blank" rel="noopener" href="https://github.com/huluo666/HJProgressView">HJProgressView</a></p>
<p>代码如下</p>
<figure class="highlight objectivec"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#import <span class="string">&lt;UIKit/UIKit.h&gt;</span></span></span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">@interface</span> <span class="title">UIProgressView</span> (<span class="title">Radius</span>)</span></span><br><span class="line"></span><br><span class="line">- (<span class="type">void</span>)setRadiusTrackColor:(<span class="built_in">UIColor</span> *)trackColor ;</span><br><span class="line">- (<span class="type">void</span>)setRadiusProgressColor:(<span class="built_in">UIColor</span> *)progressColor;</span><br><span class="line">- (<span class="type">void</span>)setRadiusTrackColor:(<span class="built_in">UIColor</span> *)trackColor</span><br><span class="line">              progressColor:(<span class="built_in">UIColor</span> *)progressColor;</span><br><span class="line"></span><br><span class="line"><span class="keyword">@end</span></span><br><span class="line"></span><br></pre></td></tr></table></figure>

<figure class="highlight objectivec"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#import <span class="string">&quot;UIProgressView+Radius.h&quot;</span></span></span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">@implementation</span> <span class="title">UIProgressView</span> (<span class="title">Radius</span>)</span></span><br><span class="line"></span><br><span class="line">- (<span class="type">void</span>)setRadiusTrackColor:(<span class="built_in">UIColor</span> *)trackColor</span><br><span class="line">&#123;</span><br><span class="line">    <span class="built_in">UIImage</span> *trackImage = [<span class="keyword">self</span> imageWithColor:trackColor cornerRadius:<span class="keyword">self</span>.frame.size.height/<span class="number">2.0</span>];</span><br><span class="line">    [<span class="keyword">self</span> setTrackImage:trackImage];</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">- (<span class="type">void</span>)setRadiusProgressColor:(<span class="built_in">UIColor</span> *)progressColor</span><br><span class="line">&#123;</span><br><span class="line">    <span class="built_in">UIImage</span> *progressImage = [<span class="keyword">self</span> imageWithColor:progressColor cornerRadius:<span class="keyword">self</span>.frame.size.height/<span class="number">2.0</span>];</span><br><span class="line">    [<span class="keyword">self</span> setProgressImage:progressImage];</span><br><span class="line"></span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">- (<span class="type">void</span>)setRadiusTrackColor:(<span class="built_in">UIColor</span> *)trackColor</span><br><span class="line">              progressColor:(<span class="built_in">UIColor</span> *)progressColor</span><br><span class="line">&#123;</span><br><span class="line"></span><br><span class="line">    [<span class="keyword">self</span> setRadiusTrackColor:trackColor];</span><br><span class="line">    [<span class="keyword">self</span> setRadiusProgressColor:progressColor];</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//最小尺寸---1px</span></span><br><span class="line"><span class="keyword">static</span> <span class="built_in">CGFloat</span> edgeSizeWithRadius(<span class="built_in">CGFloat</span> cornerRadius) &#123;</span><br><span class="line">    <span class="keyword">return</span> cornerRadius * <span class="number">2</span> + <span class="number">1</span>;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">- (<span class="built_in">UIImage</span> *)imageWithColor:(<span class="built_in">UIColor</span> *)color</span><br><span class="line">               cornerRadius:(<span class="built_in">CGFloat</span>)cornerRadius &#123;</span><br><span class="line">    <span class="built_in">CGFloat</span> minEdgeSize = edgeSizeWithRadius(cornerRadius);</span><br><span class="line">    <span class="built_in">CGRect</span> rect = <span class="built_in">CGRectMake</span>(<span class="number">0</span>, <span class="number">0</span>, minEdgeSize, minEdgeSize);</span><br><span class="line">    <span class="built_in">UIBezierPath</span> *roundedRect = [<span class="built_in">UIBezierPath</span> bezierPathWithRoundedRect:rect cornerRadius:cornerRadius];</span><br><span class="line">    roundedRect.lineWidth = <span class="number">0</span>;</span><br><span class="line">    <span class="built_in">UIGraphicsBeginImageContextWithOptions</span>(rect.size, <span class="literal">NO</span>, <span class="number">0.0</span>f);</span><br><span class="line">    [color setFill];</span><br><span class="line">    [roundedRect fill];</span><br><span class="line">    [roundedRect stroke];</span><br><span class="line">    [roundedRect addClip];</span><br><span class="line">    <span class="built_in">UIImage</span> *image = <span class="built_in">UIGraphicsGetImageFromCurrentImageContext</span>();</span><br><span class="line">    <span class="built_in">UIGraphicsEndImageContext</span>();</span><br><span class="line">    <span class="keyword">return</span> [image resizableImageWithCapInsets:<span class="built_in">UIEdgeInsetsMake</span>(cornerRadius, cornerRadius, cornerRadius, cornerRadius)];</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">@end</span></span><br></pre></td></tr></table></figure>

<h3 id="使用"><a href="#使用" class="headerlink" title="使用"></a>使用</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">- (void)viewDidLoad &#123;</span><br><span class="line">    [super viewDidLoad];</span><br><span class="line">    UIProgressView *progressView=[[UIProgressView alloc]initWithProgressViewStyle:UIProgressViewStyleDefault];</span><br><span class="line">    progressView.frame=CGRectMake([UIScreen mainScreen].bounds.size.width/2-150, 50, 300, 50);</span><br><span class="line">    [self.view addSubview:progressView];</span><br><span class="line"></span><br><span class="line">    [progressView setProgress:0.68 animated:YES];</span><br><span class="line">   </span><br><span class="line">    //修改progressView高度</span><br><span class="line">    progressView.transform=CGAffineTransformMakeScale(1.0, 8.0);</span><br><span class="line">    </span><br><span class="line">    //设置进度条颜色和圆角</span><br><span class="line">    [progressView setRadiusTrackColor:RGBCOLOR(231, 233, 238) progressColor:RGBCOLOR(255, 153,0)];</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>



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